20. People will choose backpacking if they have very little money. (If you have very little money, backpacking is a good way to travel.)
⇒ Đáp án : A
21. They take buses or trains. (Backpackers take buses or trains to save money.)
⇒Đáp án : C
22. They stay at a hostel. (If they stay in a city, they may go to a hostel...cheap.)
⇒Đáp án : B
23. Yes, they can. (Many hostels have kitchens...cook at the hostel.)
⇒Đáp án : A
25.
⇒ Đáp án : B